It doesn’t have to be played against a curb or a wall, but it can be. It’s pretty much Pass/Don’t Pass.
Somebody says “Who will play me for $20?” Or, in the language of Guys and Dolls, “Someone fade me for $20.” This Guy will be the shooter, and will automatically be assumed to be playing the Pass Line (or in street crap terminology, he will be betting “right”). At the same time, Guy will drop his $20 on the floor. Guy will be the “shooter,” as by asking for somebody to cover his bet (to “fade” his bet), he has announced that he intends to throw the dice.
Buddy wants to play. He steps up, says, “I’ll cover that,” or similar, and drops his $20 on top of Guy’s $20–the game winner will pocket $40. Buddy is automatically assumed to be playing Don’t Pass (betting “wrong”), and is known as the “fader.”
The game begins, and Guy shoots the dice (the come-out roll). As you would expect, a roll of 2, 3, or 12 means that Guy loses and Buddy wins. A roll of 7 or 11 means that Guy wins and Buddy loses. Any other number becomes Guy’s point, and he must roll that before a 7, in order to win. If Guy rolls a 7 before his point number, he loses (he “sevens-out”) and Buddy wins. It’s that simple, and still exists as Pass/Don’t Pass bets on casino crap tables.
A few key differences between the street game and the casino game:
– There are no odds in the street game. Neither Guy nor Buddy can back up their respective bets with an odds bet. Every bet in a street game is for even money.
– The shooter (Guy) is always playing Pass, and the fader (Buddy) is always playing Don’t Pass. In a casino, the shooter can play Don’t Pass if he wants to.
– There is no table. Oh, you can play on a table, or the floor, or any flat surface. Also, as I implied, there is no rule about bouncing the dice off a table wall, as in a casino.
– If the shooter on a casino table sevens-out, the dice pass to the player to his or her left. In the street game, sevening-out does not necessarily mean that the shooter loses the dice–the shooter can keep shooting, as long as he or she has the cash to put up.
Perhaps most importantly, in the street game, players are playing against each other directly. Buddy can cover all of Guy’s $20, but if he only wanted to cover $5 of Guy’s $20, he could, as long as other players bet the difference to cover (“fade”) all of Guy’s $20. But this is a big difference from the casino game, where players do not play each other, and the house fades every bet on the table.
Hope this helps!